[Solved] How to search a document for IP addresses [closed]

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If your addresses are always on the end of a line, then anchor on that:

ip_at_end = re.compile(r'(?:[0-9]{1,3}\.){3}[0-9]{1,3}$', re.MULTILINE)

This regular expression only matches dotted quads (4 sets of digits with dots in between) at the end of a line.

Demo:

>>> import re
>>> ip_at_end = re.compile(r'(?:[0-9]{1,3}\.){3}[0-9]{1,3}$', re.MULTILINE)
>>> example=""'\
... Only addresses on the end of a line match: 123.241.0.15
... Anything else doesn't: 124.76.67.3, even other addresses.
... Anything that is less than a dotted quad also fails, so 1.1.4
... does not match but 1.2.3.4
... will.
... '''
>>> ip_at_end.findall(example)
['123.241.0.15', '1.2.3.4']

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solved How to search a document for IP addresses [closed]